3 years ago

Which one of the following pairs of separation techniques will BOTH separate salt from a mixture of salt and water?

1 answer:

6 0

Answer:

What are the options and i dont know what the options are but if one of them is distilation im 99.9% sure that is the answer.

Explanation:

Be sure to friend me and mark me as braniliest if im correct!

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An object weighing 80 kg floating in a fluid. How does the object's density compared to the density of the fluid

posledela

The object is less then the fluid c

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4 years ago

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What is the percentage of lithium in lithium carbonate (Li2CO3)?

ale4655 [162]

Molar mass Li2CO3 = 73.89 g/mol
Molar mass Li = 6.94g/mol Li = 6.94*2 = 13.88g

% LI = 13.88/73.89*100 = 18.78% perfectly correct.

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3 years ago

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How many grams of CO are produced when 41.0 g of C reacts?

CaHeK987 [17]

Answer:

95.7 g CO to the nearest tenth.

Explanation:

2C + O2 ---> 2CO

Using relative atomic masses:

24 g C produces 2*12 + 2*16 g CO.

So 41 g produces ( (2*12 + 2*16) * 41 ) / 24

= 95.7 g CO,

7 0

3 years ago

Use the Lewis model to determine the formula for the compound that forms from each pair of atoms.

Oksi-84 [34.3K]

Answer:

Explanation:

K is 1+ & I is 1- so we need 1 of each to balance out the compound.

8 0

3 years ago

A gas occupies 4.31 liters at a pressure of 0.755 atm. Determine the volume if the pressure is increased to 1.25 atm. (Boyle)

vlabodo [156]

Answer:

Explanation:

The new volume can be found by using the formula for Boyle's law which is

$P_1V_1 = P_2V_2$

Since we are finding the new volume

$V_2 = \frac{P_1V_1}{P_2} \\$

From the question we have

$V_2 = \frac{4.31 \times 0.755}{1.25} = \frac{3.25405}{1.25} \\ = 2.60324$

We have the final answer as

Hope this helps you

6 0

3 years ago